The world's tallest skyscraper has unexpectedly closed to the public a month after its lavish opening, disappointing tourists headed for the observation deck.

A faulty elevator was behind the shutdown of the 2,717-foot observation area of Burj Khalifa. The building's owner has not responded to questions. The indefinite closure comes as Dubai struggles to revive its international image as a cutting-edge Arab metropolis amid nagging questions about its financial health.